package com.tanhua.dubbo.api;

import cn.hutool.core.collection.CollUtil;
import com.tanhua.dubbo.utils.IdWorker;
import com.tanhua.dubbo.utils.TimeLineService;
import com.tanhua.model.mongo.Friend;
import com.tanhua.model.mongo.Movement;
import com.tanhua.model.mongo.MovementTimeLine;
import com.tanhua.model.vo.PageResult;
import org.apache.dubbo.config.annotation.DubboService;
import org.bson.types.ObjectId;
import org.checkerframework.checker.units.qual.A;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.aggregation.Aggregation;
import org.springframework.data.mongodb.core.aggregation.AggregationResults;
import org.springframework.data.mongodb.core.aggregation.TypedAggregation;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;

import java.util.List;

@DubboService
public class MovementApiImpl implements MovementApi {
    @Autowired
    private MongoTemplate mongoTemplate;
    @Autowired
    private IdWorker idWorker;
    @Autowired
    private TimeLineService timeLineService;
    //发布动态
    @Override
    public String publish(Movement movement) {
        try {
        //1.保存动态详情
        //设置PID
        movement.setPid(idWorker.getNextId("movement"));
        //设置时间
        movement.setCreated(System.currentTimeMillis());
        mongoTemplate.save(movement);

       /* //2.查询当前用户的好友数据
        Criteria criteria=Criteria.where("userId").is(movement.getUserId());
        Query query = Query.query(criteria);
        List<Friend> friends = mongoTemplate.find(query, Friend.class);
        //3.循环好友数据，构建时间线数据存入数据库
        for (Friend friend : friends) {
            MovementTimeLine timeLine=new MovementTimeLine();
            timeLine.setMovementId(movement.getId());
            timeLine.setUserId(friend.getUserId());
            timeLine.setFriendId(friend.getFriendId());
            timeLine.setCreated(System.currentTimeMillis());
            mongoTemplate.save(timeLine);
        }*/
       timeLineService.saveTimeLine(movement.getUserId(),movement.getId());
        }catch (Exception e){
            e.printStackTrace();
        }
        return movement.getId().toHexString();
    }
    //查询个人动态
    @Override
    public PageResult findByUserId(Long userId, Integer page, Integer pagesize) {
        Criteria criteria=Criteria.where("userId").is(userId).and("state").is(1);
        Query query=Query.query(criteria).skip((page-1)*pagesize).limit(pagesize)
                .with(Sort.by(Sort.Order.desc("created")));
        List<Movement> movements = mongoTemplate.find(query, Movement.class);
        return new PageResult(page,pagesize,0,movements);
    }

    //根据用户id，查询用户好友发布的动态列表

    /**
     * @param friendId：当前操作用户id
     */
    @Override
    public List<Movement> findFriendMovements(Integer page, Integer pagesize, Long friendId) {
        //1、查询好友时间线表
        Criteria criteria=Criteria.where("friendId").is(friendId);
        Query query=Query.query(criteria).skip((page-1)*pagesize).limit(pagesize)
                .with(Sort.by(Sort.Order.desc("created")));
        List<MovementTimeLine> lineList = mongoTemplate.find(query, MovementTimeLine.class);
        //2、提取动态id集合
        List<ObjectId> list = CollUtil.getFieldValues(lineList, "movementId", ObjectId.class);
        //3、根据动态id查询动态详情
        Query movementquery=Query.query(Criteria.where("id").in(list).and("state").is(1));
        return mongoTemplate.find(movementquery,Movement.class);
    }
    //随机获取多条动态数据
    @Override
    public List<Movement> randomMovements(Integer counts) {
        //1.创建统计对象，设置统计参数
        TypedAggregation aggregation= Aggregation.newAggregation(Movement.class,Aggregation.sample(counts));
        //2.调用mongoTemplate方法统计
        AggregationResults<Movement> results = mongoTemplate.aggregate(aggregation, Movement.class);
        //3.获取统计结果
        return results.getMappedResults();
    }
    //根据pid数组查询动态
    @Override
    public List<Movement> randomMovementsByPids(List<Long> pids) {
        Query query=Query.query(Criteria.where("pid").in(pids));
        return mongoTemplate.find(query,Movement.class);
    }
    //查询单条动态
    @Override
    public Movement findById(String movementId) {
        return mongoTemplate.findById(movementId,Movement.class);
    }
    //根据用户id，查询
    @Override
    public PageResult findByUserId(Long uid, Integer state, Integer page, Integer pagesize) {
        Query query=new Query();
        if (uid!=null){
            query.addCriteria(Criteria.where("userId").is(uid));
        }if (state!=null){
            query.addCriteria(Criteria.where("state").is(state));
        }
        long count = mongoTemplate.count(query, Movement.class);
        query.with(Sort.by(Sort.Order.desc("created"))).limit(pagesize).skip((page-1)*pagesize);
        List<Movement> list = mongoTemplate.find(query, Movement.class);
        return new PageResult(page,pagesize, (int) count,list);
    }
    //更新动态状态
    @Override
    public void update(String movementId, int state) {
        Query query = Query.query(Criteria.where("id").is(new ObjectId(movementId)));
        Update update = Update.update("state", state);
        mongoTemplate.updateFirst(query,update,Movement.class);
    }
}
